From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds <torvalds@ppc970.osdl.org> Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- net/atm/raw.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 net/atm/raw.c (limited to 'net/atm/raw.c') diff --git a/net/atm/raw.c b/net/atm/raw.c new file mode 100644 index 00000000000..4a0466e91aa --- /dev/null +++ b/net/atm/raw.c @@ -0,0 +1,98 @@ +/* net/atm/raw.c - Raw AAL0 and AAL5 transports */ + +/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ + + +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/atmdev.h> +#include <linux/kernel.h> +#include <linux/skbuff.h> +#include <linux/mm.h> + +#include "common.h" +#include "protocols.h" + + +#if 0 +#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args) +#else +#define DPRINTK(format,args...) +#endif + + +/* + * SKB == NULL indicates that the link is being closed + */ + +static void atm_push_raw(struct atm_vcc *vcc,struct sk_buff *skb) +{ + if (skb) { + struct sock *sk = sk_atm(vcc); + + skb_queue_tail(&sk->sk_receive_queue, skb); + sk->sk_data_ready(sk, skb->len); + } +} + + +static void atm_pop_raw(struct atm_vcc *vcc,struct sk_buff *skb) +{ + struct sock *sk = sk_atm(vcc); + + DPRINTK("APopR (%d) %d -= %d\n", vcc->vci, sk->sk_wmem_alloc, + skb->truesize); + atomic_sub(skb->truesize, &sk->sk_wmem_alloc); + dev_kfree_skb_any(skb); + sk->sk_write_space(sk); +} + + +static int atm_send_aal0(struct atm_vcc *vcc,struct sk_buff *skb) +{ + /* + * Note that if vpi/vci are _ANY or _UNSPEC the below will + * still work + */ + if (!capable(CAP_NET_ADMIN) && + (((u32 *) skb->data)[0] & (ATM_HDR_VPI_MASK | ATM_HDR_VCI_MASK)) != + ((vcc->vpi << ATM_HDR_VPI_SHIFT) | (vcc->vci << ATM_HDR_VCI_SHIFT))) + { + kfree_skb(skb); + return -EADDRNOTAVAIL; + } + return vcc->dev->ops->send(vcc,skb); +} + + +int atm_init_aal0(struct atm_vcc *vcc) +{ + vcc->push = atm_push_raw; + vcc->pop = atm_pop_raw; + vcc->push_oam = NULL; + vcc->send = atm_send_aal0; + return 0; +} + + +int atm_init_aal34(struct atm_vcc *vcc) +{ + vcc->push = atm_push_raw; + vcc->pop = atm_pop_raw; + vcc->push_oam = NULL; + vcc->send = vcc->dev->ops->send; + return 0; +} + + +int atm_init_aal5(struct atm_vcc *vcc) +{ + vcc->push = atm_push_raw; + vcc->pop = atm_pop_raw; + vcc->push_oam = NULL; + vcc->send = vcc->dev->ops->send; + return 0; +} + + +EXPORT_SYMBOL(atm_init_aal5); -- cgit v1.2.3-18-g5258